Datasheet diac b3

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DB3 DB4 SMDB3
DIAC

FEATURES
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VBO : 32V and 40V LOW BREAKOVER CURRENT

DESCRIPTION Functioning as a trigger diode with a fixed voltage reference, the DB3/DB4 series can be used inconjunction with triacs for simplified gate control circuits or as a starting element in fluorenscent lamp ballasts. A new surface mount version is now available in SOT-23 package, providing reducedspace and compatibility with automatic pick and place equipment.

DO-35 (DB3 and DB4)

2 3 1

SOT-23 (SMDB3)* Pin 1 and 3 must be shorted together

ABSOLUTE MAXIMUM RATINGS (limiting values)Symbol ITRM Parameter Repetitive peak on-state current tp = 20 µs F= 120 Hz SMDB3 DB3 / DB4 Tstg Tj Storage temperature range Operating junction temperature range Value 1.00 2.00 - 40 to + 125 °C UnitA

Note: * SMDB3 indicated as Preliminary spec as product is still in development stage.

October 2001 - Ed: 2B

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DB3 DB4 SMDB3
ELECTRICAL CHARACTERISTICS (Tj = 25°C unless otherwisespecified) Symbol VBO Parameter Breakover voltage * Test Conditions C = 22nF ** MIN. TYP. MAX. I VBO1 - VBO2 I ∆V VO IBO tr IR IP Breakover voltage symmetry Dynamic breakover voltage * Output voltage *Breakover current * Rise time * Leakage current * Peak current * C = 22nF ** VBO and VF at 10mA see diagram 2 (R=20Ω) C = 22nF ** see diagram 3 VR = 0.5 VBO max see diagram 2 (Gate) MAX. MIN. MIN. MAX.MAX. MAX. MIN. 10 10 10 0.50 1 1 SMDB3 28 32 36 3 5 5 50 2 10 0.30 DB3 28 32 36 DB4 35 40 45 V V V µA µs µA A Unit V

* Applicable to both forward and reverse directions. ** Connected in parallelto the device.

PRODUCT SELECTOR Part Number SMDB3 DB3 DB4 VBO 28 - 36 28 - 36 35 - 45 Package SOT-23 DO-35 DO-35

ORDERING INFORMATION

SM DB 3
Surface Mount Version Diac Series Breakovervoltage 3: VBO typ = 32V 4: VBO typ = 40V

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DB3 DB4 SMDB3
OTHER INFORMATION Part Number SMDB3 DB3 DB4 DB3 DB3 (Blue Body Coat) DB4 (Blue Body Coat) Marking Weight 0.01 g 0.15 g 0.15 g Base...